Question: When is the basic commencement date?
Paraphrase: which of the towns has endemism of verdant seadragon?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q42979 wdt:P737 ?X . ?X wdt:P571 ?answer}
Answer: 1954-01-01T00:00:00Z, 1958-01-01T00:00:00Z, 1963-01-01T00:00:00Z, 1966-01-01T00:00:00Z